Chemiluminescence determination of iodide and/or iodine using a luminol–hexadecyltrimethylammonium chloride reversed micelle system following on-line oxidation and extraction

Fujiwara, Terufumi; Mohammadzai, Imdad Ullah; Inoue, Hidekazu; Kumamaru, Takahiro

doi:10.1039/a910311m

Cited by 74 publications

(54 citation statements)

References 22 publications

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“…4,5 Using cetyltrimethylammonium chloride (CTAC) reverse micelles as micro-reactors in CL analysis, we have developed a flow-injection method based on a reversed micellar-mediated CL detection following solvent extraction. [6][7][8][9] In our previous studies concerning a luminol CL reaction with metal complexes in the CTAC reversed micellar solution, 10,11 it has been noted that the dissociation of metal complexes occurs at the reversed micellar interface, and that the released metal ions subsequently catalyze the CL reaction in the reversed micellar aqueous phase immediately after metal uptake by the reverse micelle into the water pool. In the uptake process, the reversed micellar interface has been regarded as being significant.…”

Section: Introductionmentioning

confidence: 99%

Acid-Base Behavior of Rhodamine B in a Reversed Micellar Medium of Cetyltrimethylammonium Chloride in 1-Hexanol-Cyclohexane/Water

2010

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The latter neutral form is represented by an equilibrium mixture of the colored and fluorescent zwitterions RB ± and the colorless lactones RB , which exist in some solvents, but not in water, where the fraction of RB species is too small to be registered experimentally. In this work, the RB dye was used as a probe to understand the properties of the reversed micellar interface; also, the change in the location of RB in the CTAC reversed micellar media was investigated 2010 © The Japan Society for Analytical Chemistry † To whom correspondence should be addressed. E-mail: tfuji@sci.hiroshima-u.ac.jp The acid-base behavior of rhodamine B (RB) in reversed micellar solutions of cetyltrimethylammonium chloride (CTAC) in 1-hexanol-cyclohexane/water was investigated through absorption and fluorescence measurements under varying the hydrogen-ion concentration in a water pool, the mole fraction of 1-hexanol in a bulk solvent and the water to surfactant molar concentration ratio. RB exhibited equilibria between the cationic, zwitterion and lactone forms of the dye as a cause of the spectral changes, indicating a change in the RB distribution among the reversed micellar water pool, interface and bulk solvent. Furthermore, RB was used as a probe to develop a method for determining the critical micelle concentration (CMC) in CTAC solutions. Abrupt variations in the intensities and wavelengths of the absorption and emission maxima of RB were observed at the CMC. The standard free energy of micellization was also evaluated from the CMC data.

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Section: Introductionmentioning

confidence: 99%

Acid-Base Behavior of Rhodamine B in a Reversed Micellar Medium of Cetyltrimethylammonium Chloride in 1-Hexanol-Cyclohexane/Water

2010

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“…Düşük derişimlerde iyodür tayini için donanımı pahalı, kullanımı için tecrübeli personele ihtiyaç duyulan, numunelerin bazı ön işlemlerle analize hazırlanmasını gerektiren ve analiz süresi uzun olan amperometrik [2], spektrometrik [3][4][5][6][7], kromatografik [8][9][10], voltametrik [11], kemilüminesans [12] ve akış enjeksiyon analizi [13][14][15][16] gibi çeşitli enstrümantal analiz yöntemleri bulunmaktadır.…”

Section: Introductionunclassified

Paladyum Komplekslerine Dayalı İyodür-Seçici Karbon Pasta Elektrot Hazırlanması

Özel¹,

Muratoğlu²,

Ertürün³

2017

SDÜ Fen Bil Enst Der

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Anahtar KelimelerKarbon pasta elektrot, İyodür-seçici elektrot, Potansiyometri, Paladyum kompleksleri Özet: Dibromo[1,1′-bis(difenilfosfin)ferrosen] paladyum(II) (iyonofor I) ve dikloro[1,1′-bis(difenilfosfin)ferrosen] paladyum(II) (iyonofor II) olarak adlandırılan paladyum komplekslerinin kullanıldığı yeni iyodür-seçici karbon pasta elektrotlar hazırlandı. İyonofor I ve II kullanılarak optimum karbon pasta bileşimiyle hazırlanan elektrotların pH 4,0'da sırasıyla −43,2 ± 0,6 mV/pI ve −43,8 ± 0,6 mV/pI eğimle, 3,5×10 −6 M ve 3,7×10 −7 M gözlenebilme sınırıyla, 1,0×10 −5 − 1,0×10 −1 M ve 1,0×10 −6 − 1,0×10 −1 M derişim aralığında doğrusal cevap verdikleri gözlendi. Önerilen elektrotların kısa cevap sürelerine, 3 aylık ömre, iyi bir tekrarlanabilirlik ve üretilebilirliğe sahip oldukları bulundu. Ayrıca, elektrotlar, iyodür içeren ilaç numunelerinde iyodürün potansiyometrik tayini için indikatör elektrot olarak başarılı bir şekilde kullanıldı. Preparation of Iodide-Selective Carbon Paste Electrode Based on Palladium ComplexesKeywords Carbon paste electrode, Iodide-selective electrode, Potentiometry, Palladium complexes Abstract: New carbon paste iodide-selective electrodes based on palladium complexes named as dibromo[1,1′-bis(diphenylphosphino)ferrocene] palladium(II) (ionophore I) and dichloro[1,1′-bis(diphenylphosphino)ferrocene] palladium(II) (ionophore II) were developed. The electrodes, prepared with optimum carbon paste composition by using ionophore I and II exhibited linear response with slopes of −43.2 ± 0.6 and −43.8 ± 0.6 mV/pI, detection limits of 3.5×10 −6 M and 2.9×10 −6 M at pH 4.0 over the concentration range of 1.0×10 −5 − 1.0×10 −1 M and 1.0×10 −6 − 1.0 × 10 −1 M, respectively. The proposed electrodes were found to have short response times, lifetime of three months, good reproducibility and repeatability. Moreover, the electrodes were successfully used as an indicator electrode for the potentiometric determination of iodide in an iodide containing drug sample.

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“…For all the aforementioned reasons, rapid and accurate determination of the most common iodine-containing molecules and ions found in environmental waters such as iodine (I 2 ), iodide (I À ) and iodate (IO 3 À ) is critical in fields such as biological and environmental sciences. In recent years, many analytical methods have been developed to detect iodine and iodide such as chemiluminescence [5], titrimetry [6], diffuse reflectance spectroscopy [7], gas chromatography mass spectrometry [8] or ion chromatography [9]. These techniques, however, often require complex procedures and expensive equipment, making these unsuitable for rapid and efficient detection of iodine and iodide.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous detection of iodine and iodide on boron doped diamond electrodes

Fierro

Comninellis

Einaga

2013

Talanta

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a b s t r a c tIndividual and simultaneous electrochemical detection of iodide and iodine has been performed via cyclic voltammetry on boron doped diamond (BDD) electrodes in a 1 M NaClO 4 (pH 8) solution, representative of typical environmental water conditions. It is feasible to compute accurate calibration curve for both compounds using cyclic voltammetry measurements by determining the peak current intensities as a function of the concentration. A lower detection limit of about 20 mM was obtained for iodide and 10 mM for iodine. Based on the comparison between the peak current intensities reported during the oxidation of KI, it is probable that iodide (I À ) is first oxidized in a single step to yield iodine (I 2 ). The latter is further oxidized to obtain IO 3 À . This technique, however, did not allow for a reasonably accurate detection of iodate (IO 3 À ) on a BDD electrode.

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Chemiluminescence determination of iodide and/or iodine using a luminol–hexadecyltrimethylammonium chloride reversed micelle system following on-line oxidation and extraction

Cited by 74 publications

References 22 publications

Acid-Base Behavior of Rhodamine B in a Reversed Micellar Medium of Cetyltrimethylammonium Chloride in 1-Hexanol-Cyclohexane/Water

Acid-Base Behavior of Rhodamine B in a Reversed Micellar Medium of Cetyltrimethylammonium Chloride in 1-Hexanol-Cyclohexane/Water

Paladyum Komplekslerine Dayalı İyodür-Seçici Karbon Pasta Elektrot Hazırlanması

Simultaneous detection of iodine and iodide on boron doped diamond electrodes

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